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kirash4

Printing a circular object

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Is there a way to print a circular object, like a ring, without the printer doing the diagonal infil but rather have it fill it in by going in circles instead? Basically I'm trying to print a large ring shape (200mm diameter) where the thickness of the ring is 5mm (and height is 10mm). I need the infill at 100% for strength, but doing that causes it to fill it in with diagonal lines. And because I'm going to be using translucent material, having the criss-cross layers just doesn't look good.

I kinda want a spiral fill, from the inner circle to the outer and moving up in layers, just going round and round. I don't think that's possible, at least not with the 'Spiral' function, but you get the idea (I hope). Actually, it's very much like when it's laying down a brim, where it spirals it inward.

Suggestions?

 

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Huh. Never thought it would actually do that but I'm watching the printer do it in amazement. Awesome. Makes me wonder if it would also work on small odd-shapes objects that are flat (uniform height, just not ring shaped, or solid) ... Guess there's only one way to find out. Thanks all!

 

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I should add that the wall follows the shape of the piece and you can print as many walls as you want. I am not sure how the exact middle (the last wall) of the piece would turn out with an irregular shape

 

Yeah, I kinda figured it has a 50/50 chance of working depending on the piece. What I'm making though is fairly symetrical which should be okay. We'll see when I actually get to print one.

 

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Can you use spiralize and make the shell thickness really thick?

 

you can not use the Spiralize-Function (in expert settings/black magic), because Cura is slicing it for a single perimeter und tries to extrude a 5mm thick outer wall with one single line (which is continously moving in z+), so it wants to extrude way too much material and you will get immediate clicks. best shell thickness i get by spiralizing is 0.8mm at a layer height of 0.1mm

so mnis' way to go would be to turn off spiralizing and go for 5mm wall thickness (better aim for 4.8 or 5.2 as its a multiple of your nozzle size and your material flow stays at 100%) at 0% infill.

cura13shells

 

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Cura does not really show it properly in layer view but if you take the g-code across to Repetier Host you see this

circle

As you can see the middle wall is a bit strange as in places it is a wall and in other places it looks like infill, which was set to 0 in Cura. Of course that may just be a graphics code thing

 

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